Ball-bearing, rotary-ventilator ring.



o. B. MBIeHAri- BALL BEARING, ROTARY VENTILATOR RING.

APPLICATION FILED PEILZB, 1913.

1,084,464, Patented Jan. 13, 19m

UNITED STATES PATENT OFFICE.

CHARLES E. .MEIGHAN, or REVERE, MASSACHUSETTS.

I '0 all whom it may concern: I

Be it known that I, CHARLES E. MEIGHAN, a citizen of the United States,residing at 96 Florence avenue, Revere, in the county of Suffolk andState ofMassachusetts, have invented a new and useful Ball Bea-ring,Rotary-Ventilator Ring, of which the following is a specification.

My invention relates to improvements in rotary ventilator ball-bearingrings in which metal rings operate in conjunction with steel balls; andthe objectsof my improvements are, first, to provide a practically tightjoint between. the ventilationpipe and the ventilator head, and therebyincrease the exhaust power of the ventilator; second,

to give a free and unobstructed air passage through ventilator; andthird, to reduce friction and noise incidental thereto. I at tain theseobjects by the mechanism illustrated in the accompanying drawing, in

' which- Figure 1 is an elevation of the entire ring; Fig. 2 a detailcross section through the points 1, 2, 3, Fig. 1.

Similar letters refer to similar parts throughout the two views.

The ring A with its annular groove or ball-race G. its perpendicularflange E on the inner circumference, and oflset- P and flange R on itsouter circumference, constitutes the upper section of ring. he ring 7 ISpecification of Letters Patent.

Application filed February 28, 1913. Serial No. 751,357.

BALL-BEARING, ROTARY-VENTILATOR RING.

Patented Jan. 13, 1914.

B with its annular groove or ball-cup M, its v ball race N, and itsdownward flange F constitutes' the lower section of the ring. The ringK, with its ball-cup D, secured to flange R of ring A by bolts S andnuts L, serves to the ballsH and'T in their respective channels. Theflange E on the ring A is of suflicient length to be firmly secured tothe rotary ventilator head with bolts or rivets. The flange F. on thering B is of suflicient lengthto be firmly secured to the ventilationpipe with bolts or rivets.

I am not aware that prior to my invention, ball-bearing ventilator ringshave been made.

I therefore claim:

The combination of a ball-bearing ring,

having a ball-race in its lower surface, a

'fasten the rings A and B together and retain

